Overall lead-free X-ray shielding plastic compound material

Abstract

The invention relates to an overall lead-free X-ray shielding plastic compound material. The overall lead-free X-ray shielding plastic compound material uses rare earth mixture to replace lead, simultaneously adds metal tin and compounds thereof, metal tungsten and the compounds thereof and bismuth and the compounds thereof as shielding main materials and is further compounded with plastic to prepare the compound material which can realize the overall shielding and the complete lead-free property within the energy range of 40-170kVp. When in use of rare earth and bismuth materials, the way ofcombined use of the two metal element inorganic compounds and unsaturated organic complexes is adopted, and the in-situ reaction and the compounding with a polymer matrix are carried out, thereby leading the shielding element disperse phase to form nano-micro-level dispersed particles. The prepared material combines the X-ray shielding performance of shielding elements and the good conventional physical mechanical performance of matrix polymer material and can be widely used in medical diagnostic X-ray machines, X-ray diffraction instruments and occasions accompanied with X-ray generation forray protection for working staff.

Description

Technical field: [0001] The invention relates to a lead-free X-ray shielding plastic composite material mixed with rare earth and other metals and compounds. Background technique: [0002] The invention is to prepare polymer composite materials for X-ray shielding with high shielding performance, lead-free, light and soft, and good physical and mechanical properties. Protection of workers in places accompanied by X-ray generation. [0003] The development, production and popularization of radiation protection materials is one of the key points of civil health protection work, and it is also an important part of radiation protection in the field of nuclear energy development and military use. For a long time, among the radiation workers in our country, there are a large number and the worst protection conditions are medical diagnosis and cardiovascular interventional X-ray workers (X-ray machines, CT machines). They need a lot of high-quality, light radiation-proof clothing....

AI Technical Summary

Problems solved by technology

[0010] Russian patents RU2054439 and RU2028331 disclose plastic X-ray-resistant composite materials modified with inorganic rare earth oxide fillers, but due to the poor compatibility of inorganic rare earth (rare earth oxides) with the plastic matrix, the polymer matrix Voids are prone to appear at the interface, and these gaps will be easily penetrated when irradiated by high-energy rays, and even the phenomenon of ray leakage occurs. In addition, we also found that adding a large amount of inorganic rare earth and metal bismuth (and its inorganic compounds) directly into the polymer matrix It will greatly reduce the comprehensive performance of composite materials.

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